Question

1. The mean free path for photons in the core of a Solar-type star has a density of 7.0\times10^4 kg m$^{-3}$. Assume that a dominant interaction is electron scattering with a cross section of 6.7\times10^{-29} m$^2$. Assume a solar composition of X = 0.70, Y = 0.28, and Z = 0.02. The mass of hydrogen is 1.7\times10^{-27} kg. What is a photon's mean free path using these values? 2. Within the core region described in question 1, calculate the path length over which a beam of photons would be reduced to a fraction of 0.1 of its original intensity.

          1. The mean free path for photons in the core of a Solar-type star has a density of 7.0\times10^4 kg m$^{-3}$. Assume that a dominant interaction is electron scattering with a cross section of 6.7\times10^{-29} m$^2$. Assume a solar composition of X = 0.70, Y = 0.28, and Z = 0.02. The mass of hydrogen is 1.7\times10^{-27} kg. What is a photon's mean free path using these values?
2. Within the core region described in question 1, calculate the path length over which a beam of photons would be reduced to a fraction of 0.1 of its original intensity.

$1. The mean free path for photons in the core of a Solar-type star has a density of 7.0×10^4 kg m^-3. Assume that a dominant interaction is electron scattering with a cross section of 6.7×10^-29 m^2. Assume a solar composition of X = 0.70, Y = 0.28, and Z = 0.02. The mass of hydrogen is 1.7×10^-27 kg. What is a photon's mean free path using these values? 2. Within the core region described in question 1, calculate the path length over which a beam of photons would be reduced to a fraction of 0.1 of its original intensity.$

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